No money, no material reward is comparable to the praise, the shouts of well done and accompanying pat on the back of one's fellowman. Applause and laughter in the theater have a similar effect; and sometimes, today, I stand with Russell Downing, the manager of the finest, largest cinema in the world, the Radio City Music Hall in New York, in a quiet darkened corner, and listen to that huge audience roaring with laughter at something I've done, the tilt of my head or a facial reaction, and joy seems to burst within me.
To think that all those people, for even a moment, were able to forget their personal problems and troubles and concertedly laugh with or at me. [...]
-Cary Grant in his autobiography, Archie Leach
source